Miami -- The Dallas Mavericks captured their first NBA championship, beating the favored Miami Heat 105-95 in Game 6 Sunday night at the American Airlines Arena. It was another chapter of disappointment for LeBron James, who signed with the Heat to win a championship after playing seven seasons in Cleveland.

But behind the Mavericks' role players and All-Star forward Dirk Nowitzki they won three straight games against the Heat to close out the series in six games.

The Mavericks have started the quarter on a 5-0 run to take a 81-77 lead. The Mavericks are rolling, taking their biggest lead of the game 89-77.

THIRD QUARTER

Backup center Ian Mahinmi just made his second field goal of the series, a 16-foot jumper as time expired in the third quarter that extended the Mavericks lead to nine. The Mavericks went on a 10-5 run to take a 63-56 lead. Dirk Nowitzki is 3 of 16 from the field. The Mavericks' depth is still proving too much for the Heat. Wow, Ian Mahinmi i

SECOND QUARTER

Mavericks backup guard Jason Terry has been sensational throughout the series and he's big again tonight. He's made eight of 10 shots for 19 points, mostly coming from pull up jumpers. Dirk Nowitzki went 1-of-12 from the field for three points, but the Mavericks took a 53-49 lead into halftime. The quarter started with DeShawn Stevenson hitting all three 3-pointers and the Mavericks have opened the quarter on a 8-1 run to take 40-28 lead with 9:48 remaining. Mavericks' bench has outscored the Heat's backups 21-5. But Heat goes on 7-0 run to cut the deficit to 40-35. Players from both teams had to be separated after Eddie House's 3-pointer extended the Heat's lead to 42-40. As the team's were walking off the floor on a timeout, Stevenson pushed Udonis Haslim in the back and then Mario Chalmers and Stevenson had to be separated. Haslim, Stevenson and Chalmers are all assessed technical fouls. No player is ejected.

FIRST QUARTER

The Mavericks goes to zone defense to halt the Heat's fast start. They close out quarter on 22-7 run. LeBron James has came out aggressive, hitting his first four shots for nine points in four minutes. Heat guard Mario Chalmers starts the game shooting airballs on his first two attempts. Heat Coach Erik Spoelstra started Chalmers ahead of Mike Bibby because J.J. Barea's had been effective in the previous two games. Mavericks' Dirk Nowitzki has two fouls with 5:11 remaining. Guard Jason Terry has come off the bench and made his first two shots to trim the Heat's lead to 22-20.

PREGAME NOTES

Heat stars LeBron James and Dwyane Wade were seen on camera during the morning shootaround before Game 5 in Dallas apparently mocking Dirk Nowitzki’s sinus and fever problems.

Nowitzki didn’t find it to be funny when asked about it after Saturday’s practice in Miami.

“I just thought it was a little childish, a little ignorant,’’ Nowitzki said. “I’ve been in this league for 13 years. I never faked an injury or an illness before. But it happened. It’s over to me.’’

Nowitzki played with a 101-degree fever in Game 4 but still led the Mavericks 86-83 victory after scoring a team-high 21 points. He was seen several times on the bench, holding a towel over his face appearing to struggle from the affects of the flu.

James and Wade were seen walking in a hallway at the AmericanAirlinesCenter, appearing to playfully cough.

“We never said Dirk’s name,’’ Wade said. “I think he’s not only one in the world who can get sick or have a cough. We just had fun with the cameras being right in our face about the blowup of the incident, and it held to be true.’’If the Mavericks win tonight, it will be their first championship in franchise history. In the 2006 NBA Finals, they lost to the Heat in six games. . . .Dallas backup center Brendan Haywood's status for tonight's game is a game-time decision. He did not play in Game 5 because of a hip injury. . . .The Mavericks are 3-0 in elimination games this postseason.